Valve



July13,192e. 1,592,267

L.v S. HAMER VALVE Filed July 30I 1925 Patented July 13, 1926.

PATENT OFFICE.

LELAND S, KAMER, OF FULLERTON, CALIFORNIA.

VALVE.

Appncanon med my so, 1925. serial No. 46,988.

This 'invention has to do with a valve, and has particular reference to a pump valve, forl instance, a valve for a slush pump, or the like.

It is a general object of this invention to provide an efficient, 'improved and economical valve of vthis general character.

Valves ordinarily employed in slush pumps, 'and the like, are of' the poppet type and are made tight by means of rubber packing, or the like. In ordinary valves of this class the packing is comparatively large and the construction is such that all, or practically all, of 'the load carried by the valve comes upon the packing. Further, these valves are usually such as to wear comparatively fast.

It isan object of this invention to provide a valve havlng'comparatively large, durable v Wearing parts.

It is another object of this invention to provide avalve inwhich only enough pressure comes upon the packing, to properly seal it and in which the packing is comparatively small. A further object othis invention is to provide a valve with large and strong wearing parts and which is at the same time comparatively light and inexpensive of construcon. y The various objects and features of my invention will behest and more fully understood from the following detailed description of a typical form of the invention through which description reference is had to the accompanying drawings in which Fig.' 1 is ,a `fragmentary sectional view of a slushipump: showing the intake valves of the pump. e

' Fig. :2 is anmenla'rged detailed sectional view of one ot' the valvesshowing in detail the construction provided by this invention, and

Fig. 3 is a reduced plan view of the valve taken as indicated by line` 3,-3 on Fig. 2.

The valve provided by this invention isv applicable to various classes of machinery. It is particularly suited for use 1n slush y pumps,and theJ like, so therefore I will in this disclosure set forth a form ofthe invention particularly suited to a'slush pump. To Ifacilitate a full understanding of the invention I have shown in Fig. 1 of the drawdevice as hereinafter described. mounted inthe valve chamber of the pump fcylinder, a piston rod 14 entering the cylinder through a packing gland 15 in one of 'the heads and attached to the piston, a valve chest y16 connected Ato vthe heads of the cylinder by suitable ports 17, valves 18 in the valve chest, and various other parts usual to mechanisms of this character. Fig. 1 ofthe drawings I have shown in detail the intake valves of the pump which control the flow from the intake chamber 19 ofthe valve chest to the ports 17 connected with the ends of the cylinder.

.Each valve comprises, generally, a seat 20 mounted stationary in the valve chest of the pump and a movable part or valve proper 21. The movable part of the valve is normally held closed, or in seating engagement with the seat, by means of a spring 22 arranged between the valve part 21 and a removable .cover plate 23. The arrangement and construction thus far described are common pumps of the types mentioned.

This invention is concerned particularly Wi th the construction of the valve regardless of the particular use to which it is put and of the -particular type of mechanism in which it may be embodied. In accordance With this invention the seat 20 includes an annular top 24 which is comparatively thin and Wide. -The upper side of the top is preferably flat and finished to form a seat or face 26 to receive the movable part of the The seat is by means of a Hangs 27 whichl extends downwardly from the under side of the top 24 Ato it the opening 28 in the valve chest. The flange 27 joins the top 24 at a point between the inner and outer edges of the latter anol is inished to tightly fit the opening in the valve chest. With this construction the outer edge portion of the ltop 24 extends outwardlyv beyond, or over hangs, the flange 27 and serves to limit the amount flange can be forced into the opening in the valve chest ,while the inner edge port-ion of the top ex- InV finish.

The valve proper includes, generally, a body or ring of packing 30 and a rigid body which carries the packing, a supporting ring .33 and a bolt 34 which holds the body together, the body including two separable sections 31- and 32. The section 31 is the' lower section of the valve and is in the form of a disc which will freely fit or pass through the top 24 of the seat. The section 31 is provided with a plurality of downwardly extending guide fingers which operate to guide the valve 21 in the seat. On the upper side of the section 31 there is an `annular projection 37 around whichV theV ring of packing 30 fits. The top section 32 of the dy is in the form of a disc slightly smaller in diameter than the section 31. The periphery portion of the top section 32 engages the packing-30 so that the packing is held between the two sections. The bolt 34 extends through the center of theY two sections and operates to clam and hold them together so that they hold t e packing tightly. The projection 37 limits the amount the sections can be moved together. The bolt is arranged through the sections so that it is tight in the .upper section and its head 38 engages 'the upper section. The\nut 39 enga es the lower section through a suitable loc washer 40. A stem 41 extends upwardly from head 38 of the bolt, forming a guide' or carrier for the spring4 22.

The packing 30 is in the form of a fiat an nular body the inner edge portion of which is clamped tightly between the upper and lower sections 31 and 32 in the manner just described. The outer portion of the packing ring projects beyond the sections and is adapted to engage the inner portion of the seat or face 26. By this constructionfthe outer edge or periphery portion of the packing ring engages the seat 26 and receives pressure so that it is held tightly against the seat.

The supporting ring 33 provided by this invention is located around or on the outside of the packing ring 30 and is provided at its lower side with -a flat face 45 adapted to engage and occupy the outer ortion of the face 26 not covered or occupied by the packing 30. The supporting ring is, as will be seen from inspection of the drawings, comparatively large in diameter and the seat 45 is comparatively wide so that the ring has a com aratively large area engaging the face 26. he supporting ring 30 is rigidly through the supporting ring 33. Any load or strain coming on the section 31 is transmitted or communicated to the top section 32 through the bolt 34 and the load or strain coming on the top section 32 is transmitted or communicated through the ribs 48 to the supporting ring 33. The supporting ring 33 directly engages the stationary seat and because of its comparatively wide face 45 and large diameter it has a large wearing area, making it particularly durable. The

outer or Vperiphery portion of the packing 30 is free so that it engages the inner portion of the face 26 and is exposed to the pressure coming on the valve. The preum coming on the periphery ortion of the ,packing forces it down and olds it tightly against the inner portion of the seat 26 mak- 'ing a fluid-tight joint between the seat 20 and .valve 21.

It is to be particularly noted that the rubber or packing 30 is comparatively smalll in diameter and therefore inexpensive, that the load supportin parts are comparatively large, therefore e ective and durable, that the lpacking does not support the valve but only receives pressure which operates to hold it in engagement with the seat, that the guide iingers 35 on the lower section 33 will operate in or through the top 24 with very little friction or resistance and that the construction is comparatively simple, light and inexpensive.

Having described only a typical preferred form of my invention I do not wish to limit myself to the specific details set forth, but

wish to reserve to myself any changes or variations that may appear to those skilled in the art or fall within the'scope of the following claims.

\ Having described my invention, I claim:

1. In combination a seat with a flat annular top and a mounting flange extending downwardly from the under side ofthe top so that thel inner and outer portions of the top overhang theftlange, and a valve including a body with ,guide'parts slidably carried in the top, a load supporting ring adapted to engage the outer portion of the top, ribs rigidly'connecting the ring and body, and

packing carried by the' body adapted to engage vthe inner portion of the top.

2.` In combination a seat having a flat annular top, and a valve including a body comprising two secions nd a bolt connecting connecing 'fillev supporting ring and loooly the sections, fa packing ring clamped between. and spaped above the packing. the sections so that it projects from the body ln Wltness that l claim the foregoing l@ to engage the inner portion of the top, a load bave hereunto subscribed my name this l5 supporting ring around. -the packing and day of July 1925.

adapted toengage the outer portion of the top, and a plurality of spaced ribs rigidly LELAND S. HAMER. 

